An individual who spiked treats with sedative and gave them to children at a youth camp in the area has admitted sexual offenses against two boys who were nine and 10.
The accused was arrested after eight children and a grown-up fell ill at Stathern Lodge in July.
The 76-year-old, from Ruddington in Nottinghamshire, confessed to a total of 17 charges when he was present at the judicial center on recently.
Nevertheless, he denied a single sexual charge he was charged with, which was concerning a nine-year-old child.
Ruben was held in detention ahead of a further hearing on 28 November.
'Candy game'
The legal representative, handling the case, detailed the defendant's actions to the judicial body.
She stated his those affected were under-privileged children who were participating in a summer camp which he operated.
The defendant conducted a "sweet game" with the youngsters, Mrs Prior stated, in which he would go into the sleeping quarters when they were getting ready for bed and tell them to eat sweets "as fast as possible".
She stated to the judge the defendant had conducted this practice with the young males "repeatedly", and minors had earlier experienced illness the following morning.
She explained the defendant had been capable of justifying this for many years as the children being "overstimulated by activities", until his stepson had suspicions in recently.
The legal representative continued: "In the summer" his family member had concerns about the situation, with valid cause.
"They resolved" to investigate in the individual's items."
Mrs Prior KC explained objects including infant oil, petroleum jelly and injection devices were discovered, and his family member notified the police about his suspicions.
She explained the man proceeded to conduct the "treat game" with six children that evening - that Saturday - and they were all ill the subsequent day.
"Authorities" had not responded by that time," she continued.
The police watchdog, the investigative body, had stated that it was investigating Leicestershire Police's handling of the situation.
Mrs Prior explained the youngsters were having difficulty walking due to their condition, so the stepson contacted the law enforcement a second time.
She stated the defendant then played the "treat game" in a space of five youngsters.